CASTERTON, a township in-the parish of KIRKBYLONSDALE, LONSDALE ward, county of WESTMORLAND, 2 miles (N.E.) from Kirkby-Lonsdale, containing 277 inhabitants. It is supposed to have received its name from an ancient castle, every vestige of which has been removed, A chapel formerly stood at Chapel-head close, near which is a well, called St. Coume's, probably a contraction of St. Columbe, the tutelar saint of the chapel.